code: def __init__(self, axis=None, **kw):
      super().__init__(_axis=axis, **kw)
  
file_path: mars/mars/tensor/reduction/nancumsum.py
imports: import numpy
  from ...None import opcodes
  from ..datasource import tensor
  from ..arithmetic.add import TensorTreeAdd
  from .core import TensorCumReduction, TensorCumReductionMixin
label_desc: Use image node_id 1 to create a new TensorNanCumsum object from inherited base classes: TensorCumReduction, TensorCumReductionMixin with example: obj = TensorNanCumsum(axis)